On Thu, 24 Nov 2022 14:56:07 GMT, Per Minborg <pminb...@openjdk.org> wrote:
>> src/java.base/share/classes/sun/nio/ch/IOUtil.java line 480:
>>
>>> 478: static MemorySessionImpl acquireScope(ByteBuffer bb, boolean
>>> async) {
>>> 479: if (async && NIO_ACCESS.isThreadConfined(bb)) {
>>> 480: throw new IllegalStateException("Confined session not
>>> supported");
>>
>> No sure about ISE here. There is no mutable state on the input that would
>> allow the acquire to succeed. I don't think anyone has run into it yet but
>> we will need to look at the AsynchronousXXXX read/write methods to decide
>> which exception to specify.
>
> This was the old behaviour which was retained in this PR.
I believe `UnsupportedOperationException` would be better for this.
-------------
PR: https://git.openjdk.org/jdk/pull/11260
